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Electronics => Repair => Topic started by: kamalshah on July 24, 2021, 05:49:57 pm

Title: What is this component
Post by: kamalshah on July 24, 2021, 05:49:57 pm
I had bought a this Car cooling fan and it worked fine but later one of the fans stopped working. I took it apart and checked everything I could. and it all seamed to work fine.
https://www.aliexpress.com/item/4001118023418.html?spm=a2g0s.9042311.0.0.6f6f4c4ddcUwDp (https://www.aliexpress.com/item/4001118023418.html?spm=a2g0s.9042311.0.0.6f6f4c4ddcUwDp)

but the fan would still not work even though the other fan works fine plugged in to this fans wire. So I thought the component in the picture might be the problem. I googled the part number but found nothing. It has 4 prongs and looks like a transistor. it has the following written on it: "0CS 29830 0QAG"[attachimg=1]
Title: Re: What is this component
Post by: Manul on July 24, 2021, 05:56:12 pm
It is likely OCH29830. It is a hall sensor with some integrated motor driver.
Title: Re: What is this component
Post by: fzabkar on July 24, 2021, 06:05:02 pm
I suspect that it is a Hall Effect sensor.

OCS = Shanghai Orient-Chip Technology Co.,LTD

http://www.orient-chip.com/Pages/ProductList.aspx?cl=en&ClassId=25&SecondId=69&Type=1&Parameter=&ReId=&ReNew=&key= (http://www.orient-chip.com/Pages/ProductList.aspx?cl=en&ClassId=25&SecondId=69&Type=1&Parameter=&ReId=&ReNew=&key=)
http://www.orient-chip.com/Pages/ProductDetail.aspx?cl=en&id=1823 (http://www.orient-chip.com/Pages/ProductDetail.aspx?cl=en&id=1823)  (OCH29830)
http://www.orient-chip.com/Upload/File/2020-02-18/202002181350493678.pdf (http://www.orient-chip.com/Upload/File/2020-02-18/202002181350493678.pdf)  (OCH29830)
http://www.orient-chip.com/Upload/File/2020-02-18/202002181354395734.pdf (http://www.orient-chip.com/Upload/File/2020-02-18/202002181354395734.pdf)  (OCH29831)
Title: Re: What is this component
Post by: kamalshah on July 24, 2021, 06:50:08 pm
Thanks I could never have guessed it.  :clap: :clap: :clap: when I turn it on the motor drives for a couple of revolutions and then stops working.
I have a multimeter, Can I test it with that?

plus how can I order one to repair it.

Thanks again
Title: Re: What is this component
Post by: kamalshah on July 24, 2021, 07:25:49 pm
This is the circuit behind the coil,
Title: Re: What is this component
Post by: kamalshah on July 24, 2021, 07:26:39 pm
The fan coil